Final answer:
Online shopping is the activity that offers convenience, lower costs, and comparison shopping, as it allows consumers to efficiently perform cost/benefit analysis to make informed purchases, potentially receiving 'good deals'.
Step-by-step explanation:
The activity in question that offers benefits such as convenience, lower costs, and comparison shopping is most likely online shopping. When consumers shop online, they experience an increase in productivity, as they can quickly compare prices and products from a variety of retailers. This leads to better decision making, where the cost/benefit analysis becomes invaluable. By comparing costs, which can range from monetary expenses to time and effort, with benefits including savings, time efficiency, and product variety, consumers are able to make informed decisions that often result in getting a 'good deal' on a product.
Examples of online shopping activities include ordering flowers over the internet for a friend in a different city or buying a used laptop computer at a virtual garage sale. Both scenarios showcase the advantages of being able to shop from the comfort of one's own home, with the added benefit of potentially finding lower prices than in traditional brick-and-mortar stores.